<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://cdn.staticfile.org/react/16.4.0/umd/react.development.js"></script>
    <script src="https://cdn.staticfile.org/react-dom/16.4.0/umd/react-dom.development.js"></script>
    <!-- 生产环境中不建议使用 -->
    <script src="https://cdn.staticfile.org/babel-standalone/6.26.0/babel.min.js"></script>
</head>

<body>
    <div class="" id="app"></div>
    <script type="text/babel">
        class App extends React.Component {
            constructor(props) {
                super(props);
                this.state = {
                    msg: 1
                }
            }
            render() {
                return (
                    // 只能挂在最后一个
                    <h1>hello world(component)</h1>,
                    <h2 onClick={this.handleClick.bind(this)}>{this.state.msg}</h2>
                )
            }
            handleClick(){
                console.log(this);
                this.setState({
                    msg:this.state.msg+1
                })
                console.log("event");
            }
        }
        ReactDOM.render(
            // <p>hello</p>,
            <App />,
            document.getElementById("app")
        )
        // new Vue({
        //     render:h=>h(app),
        // }).$mount("app")
    </script>
</body>

</html>